Accession Number : AD0667973

Title :   EFFECTS OF ULTRASONIC VIBRATIONS ON TRANSISTORS IN SUBASSEMBLIES.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Geisler,Robert R.

Report Date : OCT 1967

Pagination or Media Count : 24

Abstract : The effects of an ultrasonic cleaning technique for removal of epoxy-type conformal coatings on printed wiring assemblies were investigated. The sample assemblies included (1) a standard comb-type printed wiring test pattern for evaluation of dielectric withstanding voltage, insulation resistance and Q, and (2) representative military type transistors mounted on printed wiring boards for evaluation of hFE and ICBO. (Author)

Descriptors :   (*PRINTED CIRCUITS, CLEANING), (*CLEANING, ULTRASONIC RADIATION), TRANSISTORS, EPOXY RESINS, VIBRATION, PERFORMANCE(ENGINEERING), DIELECTRIC PROPERTIES, ELECTRICAL RESISTANCE, FAILURE(ELECTRONICS), COATINGS, EXPERIMENTAL DATA

Subject Categories : Electrical and Electronic Equipment
      Plastics
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE